{"id":5340,"date":"2024-03-25T22:56:31","date_gmt":"2024-03-25T21:56:31","guid":{"rendered":"https:\/\/rr-rieger.com\/ventile\/hygienic-overflow-valves-type-e8\/"},"modified":"2025-12-22T14:40:40","modified_gmt":"2025-12-22T13:40:40","slug":"hygiene-ueberstroemventile-typ-e8","status":"publish","type":"ventile","link":"https:\/\/rr-rieger.com\/en\/valves\/hygiene-ueberstroemventile-typ-e8\/","title":{"rendered":"Hygienic overflow valves type E8"},"template":"","meta":{"product_description":"

RIEGER E8 overflow valves are a combination of angle valves and overflow valves. Unlike an overflow valve, this valve opens with up to 100 % stroke like an angle valve if required. It is possible to seal the overflow valves.<\/p>\n

One possible application is the protection of forced feed pumps (e.g. peristaltic pumps).
The E8 overflow valve is suitable for all liquid media.<\/p>\n

Overflow valves are not safety valves.<\/b>
We recommend the T\u00dcV-approved safety valve type SHF<\/a> for this purpose.<\/p>\n","technical_data":"\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Material<\/strong><\/td>\nin contact with the product
optional
not in contact with the product<\/td>\n		1.4404\/AISI316L
1.4435\/AISI316L
1.4301\/AISI304<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
Seals<\/strong><\/td>\nO-rings\/seals<\/td>\nEPDM
(others on request)<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
Temperatures<\/strong><\/td>\nmaximum<\/td>\n<\/td>\nEPDM<\/td>\n<\/tr>\n
<\/td>\nContinuous operating temperature<\/p>\n

Sterilization temperature
<\/td>\n

<\/td>\n130 \u00b0C*<\/p>\n

150 \u00b0C* for a short time
(approx. 20 min)<\/td>\n<\/tr>\n

<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
Pressures<\/strong><\/td>\nPossible set pressure for O-ring version<\/td>\n0.5 - 10 bar (higher pressures on request)<\/td>\n<\/tr>\n
<\/td>\nPressure range depends on installed spring<\/td>\nSpecify desired setting pressure when ordering<\/td>\n<\/tr>\n
<\/td>\nControl air pressure<\/td>\nmin. 6 bar -
max. 10 bar<\/td>\n<\/tr>\n
<\/td>\n<\/tr>\n
Surfaces<\/strong><\/td>\nin contact with the product
optional<\/p>\n

not in contact with the product<\/td>\n

Ra \u2264 0.8 \u00b5m
e-polished, other surfaces on request
Ra \u2264 1.6 \u00b5m<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
Connections
Standard-
Pipe classes<\/strong><\/td>\n		DIN 11850-R2 (DIN 11866 A)
O.D.-Tube (DIN 11866 C)
DIN EN ISO 1127 (DIN 11866-B)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u00a0<\/p>\n

*dependent on operating parameters<\/div>\n","benefits":"\n\n\n\n\n\n\n
Structure of the valve<\/b><\/td>\nSolid valve body<\/p>\n

No dead spaces<\/p>\n

completely idle<\/p>\n

Many installation positions possible<\/td>\n<\/tr>\n

Absolute product protection<\/strong><\/td>\nComplete separation from the environment<\/p>\n

no sump, no dome<\/td>\n<\/tr>\n

Service friendliness<\/b><\/td>\nGasket replacement without special tools<\/p>\n

Short downtimes<\/p>\n

Optimal to clean<\/td>\n<\/tr>\n

Economic efficiency<\/b><\/td>\nStandard seals<\/p>\n

Minimal maintenance costs<\/td>\n<\/tr>\n

Additional certificates<\/b><\/td>\nalso possible in 3-A version<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","electronic_feedback":"\n\n\n
Only a
proximity switch with a maximum diameter of 12 mm is possible as electronic feedback for the E8 overflow valve.
This is screwed to the mounting bracket between the valve body and the actuator
. This proximity switch is not usually provided by us.<\/p>\n

Other solutions on request.<\/b><\/p>\n

\"\"<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","special_alloys":"

All valves are available in special materials such as Hastelloy\u00ae C-22, 1.4539\/904L, 1.4529, AL-6XN\u00ae <\/b>and others <\/b>.<\/p>\n

Please contact us directly:
sales@rr-rieger.de<\/a>
Tel.: +49 7361 5702-0<\/p>\n","image":"1778","valve_category":"hygienic_valves"},"class_list":["post-5340","ventile","type-ventile","status-publish","hentry"],"yoast_head":"\nHygienic overflow valves type E8 | Rieger<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/rr-rieger.com\/en\/valves\/hygiene-ueberstroemventile-typ-e8\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hygienic overflow valves type E8 | Rieger\" \/>\n<meta property=\"og:url\" content=\"https:\/\/rr-rieger.com\/en\/valves\/hygiene-ueberstroemventile-typ-e8\/\" \/>\n<meta property=\"og:site_name\" content=\"Rieger\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-22T13:40:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/rr-rieger.com\/wp-content\/uploads\/2024\/04\/ventilknoten-2.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"400\" \/>\n\t<meta property=\"og:image:height\" content=\"266\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/valves\\\/hygiene-ueberstroemventile-typ-e8\\\/\",\"url\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/valves\\\/hygiene-ueberstroemventile-typ-e8\\\/\",\"name\":\"Hygienic overflow valves type E8 | Rieger\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/#website\"},\"datePublished\":\"2024-03-25T21:56:31+00:00\",\"dateModified\":\"2025-12-22T13:40:40+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/valves\\\/hygiene-ueberstroemventile-typ-e8\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/rr-rieger.com\\\/en\\\/valves\\\/hygiene-ueberstroemventile-typ-e8\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/valves\\\/hygiene-ueberstroemventile-typ-e8\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Startseite\",\"item\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/home-page\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Ventile\",\"item\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/valves\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Hygienic overflow valves type E8\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/\",\"name\":\"Rieger\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/rr-rieger.com\\\/en\\\/#organization\",\"name\":\"Gebr. 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